Moment of inertia of a circular section about an axis perpendicular to the section is

Question

Moment of inertia of a circular section about an axis perpendicular to the section is

A. πd³/16

B. πd³/32

C. πd⁴/32

D. πd⁴/64

Share this question with your friends

Show all Engineering Mechanics MCQ

Comment

If a given force (or a given system of forces) acting on a body __________ the position of the body, but keeps it in equilibrium, then its effect is to produce internal stress in the body.

A. Change

B. Does not change

C. Changes periodically

D. None of these

Discuss this answer

Forces are called concurrent when their lines of action meet in

A. One point

B. Two points

C. Plane

D. Perpendicular planes

Discuss this answer

The force induced in the string BC due to the load W as shown in the below figure is

A. W sinθ

B. W cosθ

C. W tanθ

D. W cotθ

Discuss this answer

The centre of percussion is below the centre of gravity of the body and is at a distance equal to

A. h/kG

B. h²/kG

C. kG²/h

D. h × kG

Discuss this answer

The maximum mechanical advantage of a lifting machine is

A. 1 + m

B. 1 - m

C. 1 / m

D. m

Discuss this answer

The centre of gravity of an isosceles triangle with base (p) and sides (q) from its base is

A. [√(4p² - q²)]/6

B. (4p² - q²)/6

C. (p² - q²)/4

D. (p² + q²)/4

Discuss this answer

The slope on the road surface generally provided on the curves is known as

A. Angle of friction

B. Angle of repose

C. Angle of banking

D. None of these

Discuss this answer

If the number of pulleys in a system is equal to its velocity ratio, then it is a __________ system of pulleys

A. First

B. Second

C. Third

D. None of these

Discuss this answer

A force is completely defined when we specify

A. Magnitude

B. Direction

C. Point of application

D. All of the above

Discuss this answer

Which of the following is not a vector quantity?

A. Weight

B. Velocity

C. Acceleration

D. Force

Discuss this answer

Which of the following statement is incorrect?

A. A force acting in the opposite direction to the motion of the body is called force of friction

B. The ratio of the limiting friction to the normal reaction is called coefficient of friction

C. A machine whose efficiency is 100% is known as an ideal machine

D. The velocity ratio of a machine is the ratio of load lifted to the effort applied

Discuss this answer

Concurrent forces are those forces whose lines of action

A. Lie on the same line

B. Meet at one point

C. Meet on the same plane

D. None of these

Discuss this answer

The unit of force in S.I. units is

A. kilogram

B. Newton

C. Watt

D. Dyne

Discuss this answer

The moment of inertia of a thin spherical shell of mass m and radius r, about its diameter is

A. mr²/3

B. 2mr²/3

C. 2mr²/5

D. 3mr²/5

Discuss this answer

The minimum force required to slide a body of weight W on a rough horizontal plane is

A. W sinθ

B. W cosθ

C. W tanθ

D. None of these

Discuss this answer

If the masses of both the bodies, as shown in the below figure, are reduced to 50 percent, then tension in the string will be

A. Same

B. Half

C. Double

D. None of these

Discuss this answer

The velocity ratio of a simple wheel and axle with D and d as the diameters of effort wheel and load axle, is

A. D + d

B. D - d

C. D × d

D. D / d

Discuss this answer

According to Lamis theorem

A. The three forces must be equal

B. The three forces must be at 120° to each other

C. The three forces must be in equilibrium

D. If the three forces acting at a point are in equilibrium, then each force is proportional to the sine of the angle between the other two

Discuss this answer

The centre of gravity of a triangle lies at the point of

A. Concurrence of the medians

B. Intersection of its altitudes

C. Intersection of bisector of angles

D. Intersection of diagonals

Discuss this answer

When two elastic bodies collide with each other,

A. The two bodies will momentarily come to rest after collision

B. The two bodies tend to compress and deform at the surface of contact

C. The two bodies begin to regain their original shape

D. All of the above

Discuss this answer

The maximum velocity of a particle moving with simple harmonic motion is

A. ω

B. ωr

C. ω²r

D. ω/r

Discuss this answer

Which is the correct statement about law of polygon of forces?

A. If any number of forces acting at a point can be represented by the sides of a polygon taken in order, then the forces are in equilibrium

B. If any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon, then the forces are in equilibrium

C. If a polygon representing forces acting at a point is closed then forces are in equilibrium

D. If any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon taken in order, then the forces are in equilibrium

Discuss this answer

When a person, on a bicycle, drives round a curve, he has to lean __________ to maintain equilibrium.

A. Inward

B. Outward

C. Towards front

D. Towards back

Discuss this answer

The maximum frictional force, which comes into play, when a body just begins to slide over the surface of the other body, is known as

A. Static friction

B. Dynamic friction

C. Limiting friction

D. Coefficient of friction

Discuss this answer

The resultant of two equal forces P making an angle θ, is given by

A. 2P sinθ/2

B. 2P cosθ/2

C. 2P tanθ/2

D. 2P cotθ/2

Discuss this answer

The forces, whose lines of action are parallel to each other and act in the same directions, are known as

A. Coplanar concurrent forces

B. Coplanar non-concurrent forces

C. Like parallel forces

D. Unlike parallel forces

Discuss this answer

The loss of kinetic energy during inelastic impact, is given by (where m₁ = Mass of the first body, m₂ = Mass of the second body, and u₁ and u₂ = Velocities of the first and second bodies respectively.)

A. [m₁ m₂/2(m₁ + m₂)] (u₁ - u₂)²

B. [2(m₁ + m₂)/m₁ m₂] (u₁ - u₂)²

C. [m₁ m₂/2(m₁ + m₂)] (u₁² - u₂²)

D. [2(m₁ + m₂)/m₁ m₂] (u₁² - u₂²)

Discuss this answer

The unit of energy in S.I. units is

A. Dyne

B. Watt

C. kg-m

D. Joule

Discuss this answer

Center of percussion is

A. The point of C.G.

B. The point of metacenter

C. The point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis

D. Point of suspension

Discuss this answer

A differential pulley block has larger and smaller diameters of 100 mm and 80 mm respectively. Its velocity ratio is

A. 5

B. 10

C. 20

D. 40

Discuss this answer

Accepted Answer

C. πd⁴/32

Moment of inertia of a circular section about an axis perpendicular to the section is

Correct Answer :

Show all Engineering Mechanics MCQ

Related Questions

If a given force (or a given system of forces) acting on a body __________ the position of the body, but keeps it in equilibrium, then its effect is to produce internal stress in the body.

Forces are called concurrent when their lines of action meet in

The force induced in the string BC due to the load W as shown in the below figure is

The centre of percussion is below the centre of gravity of the body and is at a distance equal to

The maximum mechanical advantage of a lifting machine is

The centre of gravity of an isosceles triangle with base (p) and sides (q) from its base is

The slope on the road surface generally provided on the curves is known as

If the number of pulleys in a system is equal to its velocity ratio, then it is a __________ system of pulleys

A force is completely defined when we specify

Which of the following is not a vector quantity?

Which of the following statement is incorrect?

Concurrent forces are those forces whose lines of action

The unit of force in S.I. units is

The moment of inertia of a thin spherical shell of mass m and radius r, about its diameter is

The minimum force required to slide a body of weight W on a rough horizontal plane is

If the masses of both the bodies, as shown in the below figure, are reduced to 50 percent, then tension in the string will be

The velocity ratio of a simple wheel and axle with D and d as the diameters of effort wheel and load axle, is

According to Lamis theorem

The centre of gravity of a triangle lies at the point of

When two elastic bodies collide with each other,

The maximum velocity of a particle moving with simple harmonic motion is

Which is the correct statement about law of polygon of forces?

When a person, on a bicycle, drives round a curve, he has to lean __________ to maintain equilibrium.

The maximum frictional force, which comes into play, when a body just begins to slide over the surface of the other body, is known as

The resultant of two equal forces P making an angle θ, is given by

The forces, whose lines of action are parallel to each other and act in the same directions, are known as

The loss of kinetic energy during inelastic impact, is given by (where m₁ = Mass of the first body, m₂ = Mass of the second body, and u₁ and u₂ = Velocities of the first and second bodies respectively.)

The unit of energy in S.I. units is

Center of percussion is

A differential pulley block has larger and smaller diameters of 100 mm and 80 mm respectively. Its velocity ratio is

Also checkout

Moment of inertia of a circular section about an axis perpendicular to the section is

Correct Answer :

Show all Engineering Mechanics MCQ

Related Questions

If a given force (or a given system of forces) acting on a body __________ the position of the body, but keeps it in equilibrium, then its effect is to produce internal stress in the body.

Forces are called concurrent when their lines of action meet in

The force induced in the string BC due to the load W as shown in the below figure is

The centre of percussion is below the centre of gravity of the body and is at a distance equal to

The maximum mechanical advantage of a lifting machine is

The centre of gravity of an isosceles triangle with base (p) and sides (q) from its base is

The slope on the road surface generally provided on the curves is known as

If the number of pulleys in a system is equal to its velocity ratio, then it is a __________ system of pulleys

A force is completely defined when we specify

Which of the following is not a vector quantity?

Which of the following statement is incorrect?

Concurrent forces are those forces whose lines of action

The unit of force in S.I. units is

The moment of inertia of a thin spherical shell of mass m and radius r, about its diameter is

The minimum force required to slide a body of weight W on a rough horizontal plane is

If the masses of both the bodies, as shown in the below figure, are reduced to 50 percent, then tension in the string will be

The velocity ratio of a simple wheel and axle with D and d as the diameters of effort wheel and load axle, is

According to Lamis theorem

The centre of gravity of a triangle lies at the point of

When two elastic bodies collide with each other,

The maximum velocity of a particle moving with simple harmonic motion is

Which is the correct statement about law of polygon of forces?

When a person, on a bicycle, drives round a curve, he has to lean __________ to maintain equilibrium.

The maximum frictional force, which comes into play, when a body just begins to slide over the surface of the other body, is known as

The resultant of two equal forces P making an angle θ, is given by

The forces, whose lines of action are parallel to each other and act in the same directions, are known as

The loss of kinetic energy during inelastic impact, is given by (where m1 = Mass of the first body, m2 = Mass of the second body, and u1 and u2 = Velocities of the first and second bodies respectively.)

The unit of energy in S.I. units is

Center of percussion is

A differential pulley block has larger and smaller diameters of 100 mm and 80 mm respectively. Its velocity ratio is

Also checkout

The loss of kinetic energy during inelastic impact, is given by (where m₁ = Mass of the first body, m₂ = Mass of the second body, and u₁ and u₂ = Velocities of the first and second bodies respectively.)